Filter
Top Products
Bosch Security Systems | 2007-02 | 9922 141 70691 en
DCN Wireless | Installation and User Instructions | System Design and Planning en | 18
2.7.5.3 Total power consumption
Do as follows:
1 Find the power consumption of each device from the
consumption table (refer to table 2.2).
2 Add together the power used by all the devices. The
result is the total power consumption of the devices
that are connected to the socket.
2.7.5.4 Length of the longest extension cable
sequence
Do as follows:
1 Add together the lengths of all extension cables in
the longest sequence.
For example, an extension cable of 20 m is connected
directly to a DCN socket of the central control unit. To
the extension cable, a trunk splitter is connected. To
each tap-off socket of the trunk splitter, an extension
cable is connected. One extension cable has a length of
10 m, the other extension cable has a length of 40 m.
The length of the longest extension cable sequence is, in
this example: 20 + 40 = 60 m.
2.7.5.5 Graph
The power correction graph (refer to figure 2.3) corrects
the power level to compensate for the extension cables.
Do as follows:
1 Find the total power consumption (refer to section
2.7.5.3) on the vertical axis (Y) of the power
correction graph. For example, 40 W.
2 Find the length of the longest extension cable
sequence (refer to section 2.7.5.4) on the horizontal
axis (X) of the power correction graph. For example,
60 m.
3 The intersection of both values gives the necessary
power from the socket. For example, 53 W.
figure 2.3: Power correction graph
60
55
50
45
75
70
80
85
65
40
Y: Power (Watt)
35
30
25
20
15
10
20 40 60 80 100 120 140 160 180
X: Extension cable (m)
DCN-WCCU
+ DCN-E PS
200 220 240 250
5
0
6
11
16
21
27
32
38
43
49
54
60
65
70
76
81
6
12
18
24
30
36
42
48
54
60
66
72
78
84
6
13
20
26
33
40
46
53
60
66
73
80
7
15
22
30
37
45
52
60
67
75
82
8
17
25
34
42
51
60
68
77
85
9
18
27
36
46
55
64
73
83
10
20
30
40
50
60
70
80
11
21
32
43
54
65
76
12
24
36
48
60
72
84
13
26
40
53
66
80
15
30
45
60
75
17
34
51
68
85
18
36
55
73